Nitrogen Isotope Separation by Means of Cation Exchange Resin, (I)

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  • OHTSUKA Haruhisa
    Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology Chubu Electric Power Co., Inc.,
  • OHWAKI Masao
    Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
  • NOMURA Masao
    Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
  • OKAMOTO Makoto
    Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
  • FUJII Yasuhiko
    Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

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タイトル別名
  • Nitrogen Isotope Separation by Means of Cation Exchange Resin, ( I ). Effects of Eluent Concentration.
  • Effects of Eluent Concentration

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説明

In order to develop a feasible process for production of enriched 15N, nitrogen isotope separation by ion exchange has been studied. The attention has been placed on the concentration of the eluent LiOH solution introduced into the ion exchange column, packed with specially synthesized cation exchange resin. The ammonium ion adsorption band initially charged in the resin bed was eluted in a reverse breakthrough manner. The separation coefficients ε have been confirmed not to be seriously affected by the eluent concentration. However a tendency of slight decrease in ε has appeared in the high concentration region. The values of HETPs of the process have been also shown almost constant, in spite of the large difference in the migration velocity depending on the eluent concentration. The results suggest that the ion exchange rates are very fast at high concentrations of the eluent, probably due to the large mobility of neutral ammonia in the resin.

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